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Emseal Closure
Expandable sealant is used to seal out dust, air, wind-driven snow and moisture through-out metal buildings, especially roofs. Typical application would be at the ridge, peak cap, hip and ridge, end wall and pitch break.
AST is idea as a filler in expansion/compression joints subject to movement from thermal expansion and contraction, as as a gasket in mechanically fastened, non-moving applications such as lap seams. AST is suitable for use against metal, plastic, wood, concrete, and other materials common in metal building structures.
Material Specifications
- Emseal Closure – 1″ x 1″ x 19.68′ expanded
- Will not dry out and become hard and brittle
- UV-stable
- Highly resistant to bugs and vermin
- Will not extrude from between joints like caulk or butyl tapes
- Conforms to contours and fills gaps
- Maintains a seal during thermal expansion and contraction of building panels
- Excellent compressability and recovery (minimal compression sets)
- Good thermal and sound insulator
- No shrinkage or blow-out due to closed-cell breakage
- Supplied with self-advehesive on one side. After removal of packaging, material begins gradual expansion – more slowly in cold weather than in hot


